Quality is a culture within our entity where it is understood by all that quality takes preference over all.
Main Drive-Chain Contact
When the Dive-Chain is broken or elongate, the escalator will be protected.
These contacts have been installed at both the top and bottom of the escalator at the transition curve. If an object gets caught between the step and the skirting panel, the resultant pressure on the skirting panel will actuate one of these contacts, thereby disabling and switching off the escalator.
Handrail Inlet Contacts
The handrail inlet contacts are located far beneath the head of the balustrade. The handrail entry contacts are so positioned that if there is any danger of an object becoming wedged in the handrail inlet points, a contact will actuate and switch off the escalator.
Step chains broken contacts
Located in the lower step-return truss, these contacts monitor the step chains for elongation, breakage or shortening of one or both of the step chains. When actuated, the monitoring contacts will disable and stop the escalator’s further movement.
Step Sag contacts
Fixed at the start sections of both inclined upper and lower transition curves, it will be actuated to stop escalator in case step (including step roller) sags more than 3mm or step broken.
This is a safety feature, which monitors the main power supply’s phase. In the event of phase failure or phase reversal. The escalator will be stop.
Motor Overload & Overheat (Relay)
This relay monitors the motor working condition. In case of motor over loaded or overheated is over 120%, the escalator should be stopped.
If a foreign object is trapped between the comb and the steps, the resulting pressing action will move comb plates backwards and actuate the safety contacts, thereby switching off the escalator.
Step Gap Illumination
Special green lamps in the form of fluorescent tubes, mounted on both the top and bottom of the escalator, make the individual steps clearly discernible and distinguishable, especially at the horizontal runs. Boarding the escalator is therefore made much easier for the young, elderly and inexperienced persons.